並前往http://w3.uch.edu.tw/ylhsu/%E6%8A%95%E8%B3%87%E5%AD%B8(%E4%BA%8C)/%E8%AC%9B%E7%BE%A9/Ch1-%E6%8A%95%E8%B3%87%E5%A0%B1%E9%85%AC-1051215.pdf